<div class='center jumbotron'>
  <h1>欢迎来到测试页面</h1>
  <h2>
    This is the home page for the
    <a href='http://www.railstutorial.org'>Ruby on Rails Tutorial</a>
    sample app
  </h2>
  <%= link_to 'Sign up now', signup_path, class:'btn btn-lg btn-primary' %>
</div>
<%= link_to image_tag('rails.png',alt:'Rails logo'), 'http://rubyonrails.org/' %>
<%#= link_to image_tag('kitten.jpg',alt:'猫'), 'http://rubyonrails.org/' %>